Patti Newton has been married to fellow Australian entertainer Bert Newton since 9 November 1974, and often appears with him. Bert Newton sometimes refers to her as "Patricia Anne Therese Bernadette McGrath Newton". She is the mother of Lauren and Matthew Newton.

On 16 May 2008 Newton was robbed at Chadstone Shopping Centre, in suburban Melbourne while she was at a cafe. A bag containing a diary, cash and jewellery inherited from her mother was stolen.[2] Some of the items were recovered days later, and two people were later charged over the theft.[3]

In 2012 Patti Newton was one of the 12 celebrities to take part in Season 2 of The Celebrity Apprentice Australia. She was 'fired' after Task 5 which involved the team she was part of (Team Fortune) taking part in a semi-nude publicity-stunt for the We Care charity. Patti effectively chose to leave when she requested to be the one who was fired.